Gauge



Aug. 12, i924.

R. V. FUSCO GAUGE Filed April 25 1921 Patented Aug. 12, 1924.

nuire stares 1,504,683 Mirar rFiCE RUDOLPH V. FUSCO, OF BROOKLYN, NEW YORK.

GAUGE.

Application filed. April 25, 1921.

T0 rift-ZZ whom t may concern.'

Be it known that I, RUDOLPH V. FUSCO, a citizen of the United States, and a resident of the borough of Brooklyn, in the county of Kings, city and State of New York, have invented certain new and useful Gauges, of which the following is a specification.

This invention relates to. gauges, and it is an object of the invention to provide a gauge to readiiy and accurately determine the outside diameter of sphericalv or Cylindrical bodies or round stock and indicate the diameter, and to provide agauge for this purpose which is simple and cheap in construction Vand efficientin use. i

It is another object of the invention Yto combine witha gauge of this character .a scribing gauge to inscribe on a piece'of work the line or lines to which the work is to be machined or otherwise worked. l

In the drawing accompanying and forming a part of this specificationl Figure l is a perspective view of a gauge, partly in section, illustrating an embodiment of my invention. y

Figure 2 is a sectional end view taken on the line 2-2 of Figure 1 looking in the direction of the arrow; and

Figure 3 is a longitudinal sectional view and showing the. manner of taking or. ascertaining the/outside ,diameter of a spherical or Cylindrical bodr- Similar characters `of reference designate like parts throughout the different views of the drawing. e e

The embodiment of myinvention shown in theldrawing comprises a gauge member 4. arranged with a pair of gauge faces 5 to be engaged by, or be brought into engagement with, the surface of a convex body the diameter of which is to be determined, `said gauge faces diverging in opposite directions at an angle of thirty degrees to a line passing through the vertex of the angle formed by said faces and diametrically through ,the body engaged by them.

The gauge member 4 is arranged with a portion 6 inthe form of a tube secured to the gauge member with the axis thereof in line with a line bisecting the angle formed by the gauge faces 5. This tube has a slot 7 therein with graduations 8 arranged adjacent to said slot reading from right to left as viewed in Figure 1 of the drawing. A plunger 10 is slidably mounted in the tube, said plunger having a portion 9 at one end of reduced Serial No. 464,199.

diameter to slidably engage in a perforation 12 (Figure 8) in the gauge member 4 coaxially with the bore of the tube and passing through the vertex and bisecting the angle between the gauge faces 5. vA'pointerl passing through the tube slot 7 is fixed in the plunger to participate in the movement thereof and is arranged to co-operate 'with the graduations 8 for the purpose and in a manner hereinafter set forth. A spring V14e in the tube 6, confined vbetween the end of the plunger and a plug 15 threaded into the end of thetube, normally urges the plunger in a direction toward Athe gauge i with the shoulder of the plunger formed by the reduced portion 9 in engagement withV the gauge member, the reduced portion 9 extending into Athe space between the gauge faces 5 to a predetermined extent whichis o determined bythe lengthsof the reduced portion 9. Y

In determining the diametertof a spherical or cylindrical body vB such as a rod or the.

like the gauge faces are brought into engagement with the surface of said body; By bringing the gauge faces 5 into contact with the convex body the reduced end 9 of the plunger is forced into the tube against the action ofthe spring 14, this movement rof the body due to the inclination of the gauge faces relative to each other will lcause the plunger and pointer be movedl in `a direction from they left hand end of the tube slot and Scale ,to `the right, and the grade-ations 8 being arranged to be" read from the right to the left, a :reading of the scale 'from' the right hand end thereof to the point indicated bythe pointer, will indicate the radius of the body of which the diameter being determined and the multiplying yof saidv indication .by two will give the diameter of the body. While the graduations are ,arranged to indicate the radius of a convex body the graduations may be so arranged :that the diameter ofthe body maybe determined and read dithereon..` A slot 19 is Vcut through the wall of the arm perforation VVand the pin Ais releasably'retained in the perforation bya clamping thumbV screw 20 passing through one wall of the slotted wall of the perforation-land threaded into the other wall. A" V.portion of the part ,1S-is* cut away, as at 21, to permitv of the adjustment ofthe same yto mountjthe arm upon the tube and Vfor releasably securing the scribing tool in adpast Ythe'pointerV 13,fand has af slotted por- 'tion22 to provide opposite yieldingportions justed position on the tubular portion byV clamping the-,same thereto by means of av clamping screw23-- M Y" Y Y .r

YThe scribing tool is adapted for use 1n y f inscribing aline orlines to which an article or. piece of work,` suchas a wheel, cam or the Ylike having a hubportion is to be machined orrworked, Vor the same may be util- Y ized in4 connection withza spindle of a machine tool, `such as a'lathe,`to inscribe a working line-on apiece of: work mounted in. a work holder, such as a chuck, in the lmachine tool, The scribing tool is normally secured in` adjusted position onV the `tubular member with' the scribing pin or tool in line'with the vertex ofthe angle formed 'the gauge faces 5Jand the forward edge of thev portion ofthe scribing--tool carrier whereby it is mounted upon theV tube in Vregister with the graduations 24 of a scale arrangedy on said tubularmember, a'portion "ofwhich scale reads from left to right from the point 25 andv another portion fromright` to. left from said point. In adjusting the Y l sc ribing tool, theV distance from the axis or i center of the work to the point to. which it is Vv to be machined being known, the gauge farces j5 are ybrought into engagement .withv the Vcircular surface of the work, suoli as a hub org'the like, when the scribing tool car- 5 bythepointer 13. To, set the scribing toolY ryingLarm isV adjusted Ain a directionoutward on the tubularmember 6, Vthe known dis-- tance minus the diameter of the'hub which islascertained is'indicated on the scale 8 to adistance less than the diameter of the i hub-,portion of the work to be machined the 'v by means of a clamping member in therform cfa-yoke' 26 bent upto U-shape from afrod,

and the gauge 4 is arranged with perforated lugs 27 with a slot 28 cut through a wall of the perforation, the free ends of said yoke being adapted to slidably engage in said lug perforations and be brought up to the body to clamp the same in engagement with the gauge faces 5 and secured in such position by thumb Screws 29 co-operating with the slotted portion of the lugs 27 to firmly secure t-he yoke therein.

Having thus described my invention I claim:

1. A device of the class specitied, comprising in combinationa gauge member having diverging faces, a tubular portion extending laterally therefrom in a line coincident with the vertex of the diverging faces and arranged with graduations, a plunger slidably mounted in said tubular portion normally yieldingly maintained in position with a portion of t-he plunger projecting between the gauge faces to a predetermined extent, a pointer carried by the plunger to rco-operate with the graduations, a scribing tool, and a carrier therefor mounted on the tubular portion to have adjustment longitudinally thereon and adapted to be secured in variable predetermined positions in relation to a second set of graduations on said tubular portion for the purpose specified,

2. A device of the class specified, comprising in combination a member having a pair of diverging gauge faces, said member being adapted to be brought into contact with the external spherical or cylindrical surface of a body, a tubular portion projecting laterally from the vertex of said faces and arranged with graduations, plunger slidably mounted in said tubular portion arranged to beengaged and moved by the body as the diverging faces are brought into engagement therewith and carrying a pointer to co-operate with the graduations, a scribf ingV tool, a carrier for the scribing tool mounted on the tubular portion to have rotative movement with respect thereto and to have longitudinal adjustment with relation to a second scale on the tubular portion, and layoke adapted to be adjustably 

